### MATH 1308 Q2

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1. Crowding on a histogram is determined by the

2. For the following table, make the histogram, and find the height of the block from 15 to 30.

Income Level Percent

0 - 10 20

10 - 15 15

15 - 30 25

30 - 55 40

1. For histograms in the density scale, the unit on the vertical scale is percent.

2. The areas of the blocks in histograms represent percentages.

3. Use the following table to make the histogram, then find the percentage below 20.

Income Level Percent

0 - 5 15

5 -15 25

15 - 25 30

25 - 50 30

1. This table represents the distribution of 300 families by income in the U.S. in 1974. Class intervals include the left endpoint, but not the right. The histogram should be made such that the Income in thousands of Dollars is the horizontal scale.

Income Level Frequency Percent

0-2000 11 3.7

2000-4000 15 5

4000-7000 22 7.3

7000-10000 35 11.7

10000-16000 __ 12

16000-24000 __ __

24000-32000 70 23.3

32000-50000 55 18.3

50000 and over 5 1.7

When drawing this histogram, the height of the block from \$7,000 to \$10,000 will be:

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